Associations of perceived stress with loneliness and depressive symptoms: the mediating role of sleep quality.

"Declarations Ethics approval and consent to participateThe protocol of this study was approved by the Ethics Committee of the School of Public Health at Zhejiang University and Dongyang People’s Hospital, and all participants provide informed consent. The study methodology was carried out following relevant guidelines and regulations. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work was supported by grants from Damian Health Tech (Hangzhou) CO., LTD (Kheng-20220141, to ZL), the National Natural Science Foundation of China (72374180), “Pioneer” and “Leading Goose” R&D Programs of Zhejiang Province (2023C03163), and Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province (2020E10004). The funders had no role in the study design; data collection, analysis, or interpretation; in the writing of the report; or in the decision to submit the article for publication."